Symptoms

After you install the September 12, 2017, .NET Security and Quality Rollups that apply to the .NET Framework 4.6, 4.6.1, 4.6.2, and 4.7, you experience rendering issues in Windows Presentation Foundation (WPF) applications that use WPF types in a Windows service. When this problem occurs, applications that use a WPF element for rendering generate a black image. This occurs if the application is running in the following situations:

In a non-interactive Window Station (for example, within Windows Services)

Running as a LocalSystem account

Interactively in Session 0 by using tools such as psexec.exe

Workaround

To work around this problem, temporarily remove the September 12, 2017, Security and Quality Rollup update, and then install the corresponding September 12, 2017, Security-Only update to make sure that systems are secured against the latest vulnerabilities.